I would do it almost every day. Got to the point where I think I knew the security people at my school by name...think my passenger door is a little messed up because they had to slim jim it open so many times...
Happened when I'd go to the passenger side (sometimes driver side) forget to put the keys in my pocket (instead I put them on the seat) and grab for my bag or some books and slam the door shut...then go dangit! Don't do it much anymore...used to leave my lights on all the time in High School though, luckily everyone knew me and was willing to give me a jump start...sucked though when I'd have to leave the school at 6pm though.
Whats sad is I was at a radio shack once and locked my keys in the car, however this time the window was slightly open so I asked one of the employees if he had a hanger I could borrow...said sure and he helped me get my keys. Sat inside, started the car, got home then realized I had my wallet on me the whole time. Why is this important? I had one of those spare plastic keys you get from AAA. Was saying stupid in my head so many times I wouldn't be surprised if my neighbors heard me, wasted maybe 20 or 30 minutes fishing for those damn keys...
Luckily now I work for Firemen...haven't needed their services yet but they're supposedly trained to jimmy a door open so if needed I could use them. However it was funny watching 5 of them [i]attempting[/i] to open a door for a co-worker and not one could do it. Kept telling him he had a good theft deterrent door...lol. Also funny when I find out one of the Captains locks his keys in the car. Keep telling him to quit complaining, you've got a slim jim in your desk drawer don't ya? Oh yeah, I'm not a fireman so theoretically I can talk to them like that, although I really shouldn't, love working for those guys, awesome attitude toward stuff...[}:)]